Depending on the processed material from each drill must be properly sharpened. To verify the correct angle will help a specially prepared square plate of copper or aluminium with a thickness of 1 mm.
To become operational protractor enough to cut it cut, as shown in the picture: a large cutout at an angle of 120 degrees, the other half is 60 degrees and the surviving corner of a square is 90.
Recommend to read
“Little Bear” from Turin
1980. An unassuming little car, the Fiat Panda, takes to the roads of Europe. At the time, no one could have guessed that it would become a bestseller, remain in production until 2003, and...
A SPRAY-JEWELER
Pulverizer offered ruts, Duplenko from the city of Ekibastuz, intended for painting models. Its advantages — simplicity of manufacture, reliability, the absence in the design of scarce...
